24 W. H. Twenhofel — Physiography of Newfoundland. 



ture. Still other detail is due to variations in the position of 

 the strand-line and the work of ice. 



(2) The extensive distribution of wide flat-topped uplands 

 with local elevations of a few hundred feet, and the horizon- 

 tally of the summit levels truncating an exceedingly complex 

 structure, show the former presence of a plain at this level, 

 assumed to be a plain of subaerial erosion completed in Cre- 

 taceous time and correlated with a similar plain in the Appa- 

 lachians. 



(3) The presence of faulting of great magnitude, the up- 

 turning of the beds at the foot of the western face of the Long 

 Range, the extreme straightness of this face, and the elevation 

 on the foreland of large blocks of sediments no different from 

 those contiguous, render untenable the hypothesis that the cliff 

 face and the foreland are due to marine erosion, and practi- 

 cally prove that the Long Range owes its origin to the faulting 

 upward of this block from the foreland's level. 



(4) Wide elevated flat-floored valleys along the western 

 face of the Long Range are thought to have been formed in 

 an uncompleted cycle of erosion interrupted by renewed uplift 

 of the Long Range in pre-Grlacial time. 



